16) Stacker crane
The stacker crane in appearance looks like a conventional bridge crane except that in place of a hoist, a rotating ridged or telescoping mast is suspended from the bridge trolley with the mast equipped with a load handling device such as single or double forks or a grab.
These cranes can be manually operated or powered and are used where the carne spans multiple aisles allowing for the storage and retrieval within any aisle of items such as coils of steel.
17) Stock-to-operator equipment
A device which brings items from their storage locations to the end of an aisle where an operator or transport mechanism sends them to their point of use.
18) Storage aisle
An access route to storage areas such as rack bays, slots for pallets, bins or containers.
19) Straddle truck
An industrial lift truck that is utilized in aisles as narrow as 6 feet and has had the counterbalancing addressed by front end outriggers. These outriggers also serve to prevent the natural forward tipping motion that would be created as a load is lifted